Get Shipment Lines based on Shipment Request Id generated from Generate Shipment Request ESS Job

Summary:

We had a requirement to integrate Shipment request with third party WMS application. We had executed the ESS job Generate Shipment request and got the Shipment request details. We tried to fetch the Shipment details based on the shipment request generated from ESS job to proceed with Shipment creation and confirmation but we are not getting the details based on the same. We need to invoke an additional API shipmentLineChangeRequests to get Shipment Request ID and based on that Shipment Lines information will be fetched. Need to understand the gap in between the same. We had a similar ESS job